211453360805 has 16 divisors (see below), whose sum is σ = 262089644544. Its totient is φ = 163605627840.

The previous prime is 211453360793. The next prime is 211453360823. The reversal of 211453360805 is 508063354112.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-211453360805 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162947 + ... + 670416.

It is an arithmetic number, because the mean of its divisors is an integer number (16380602784).

Almost surely, 2^211453360805 is an apocalyptic number.

It is an amenable number.

211453360805 is a deficient number, since it is larger than the sum of its proper divisors (50636283739).

211453360805 is a wasteful number, since it uses less digits than its factorization.

211453360805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835036.

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 211453360805 in words is "two hundred eleven billion, four hundred fifty-three million, three hundred sixty thousand, eight hundred five".